Keep Your Subject in Focus When Filming Alone (6 Tips)

In short: To keep your subject in focus when filming alone, use fixed focus for static shots, walk in sync with your subject, pre-focus on a point they'll pass, use a high f-stop for deep focus, practise manual focus, or use face tracking autofocus.

Most solo filmmakers lose shots to soft focus, not because they lack skill, but because they're using techniques built for two-person crews.

I've spent over 15 years filming documentaries on my own, from Red Bull helicopter jumps to remote wildlife shoots. These six techniques don't need expensive gear or a dedicated focus puller.

How to Keep Your Subject in Focus When Filming by Yourself

1. Use Fixed Focus for Static Shots

This is the simplest technique. Use it for documentary interviews or portrait-style shots where both the camera and subject stay still.

Turn the focus ring until your subject is sharp. Once it's set, don't move the camera or the subject.

2. Walk in Sync With Your Subject

Set the focus distance first. As your subject moves, match their pace, walking forward or backward to keep the same distance. They stay sharp without you pulling focus.

It takes a bit of practice, but it works very well once you get the hang of it. Pair it with a gimbal or shoulder rig to keep your camera movement steady.

3. Pre-Focus and Let the Subject Enter the Frame

Focus on a point in the scene, like a mark on the floor or a doorway, then wait for your subject to move into it. Choose a spot you know they will pass through.

This works well for moments that can't be repeated.

4. Use a High F-stop for Deep Focus

Setting your aperture to f/8 or higher makes more of the scene sharp, front to back. It's useful when you can't risk missing focus. I used it while filming a one-take helicopter jump for Red Bull: there was no second chance.

The downside is that you lose shallow depth of field, so the shot looks less cinematic. Save it for action scenes or wide shots where focus matters more than blur. My cinematic camera settings checklist explains how aperture, frame rate and shutter speed work together.

5. Practise Manual Focus

Manual focus gives you the most control, but it takes skill. Keep one hand on the focus ring and adjust as your subject moves. An external monitor helps, especially outdoors, and so does a follow focus attachment.

To practise, use a moving object. I used to push a swing back and forth and try to keep the seat in focus. It trains your eye and hands to work together.

6. Use Autofocus (If Your Camera Supports It)

Autofocus has improved massively in the past decade. Canon's Dual Pixel AF (first introduced in the 70D), Sony's Real-time Eye AF and Panasonic's hybrid systems now offer excellent face and subject tracking.

It can be a lifesaver when you're filming unpredictable moments on your own. It's not foolproof, though. It can lock onto the wrong part of the frame, so test it before you trust it with important scenes.

Manual Focus vs Autofocus for Solo Documentary Filmmakers

Manual focus gives you full creative control over what's sharp and what isn't. That matters in documentary, where the focus point can shape meaning.

When you're filming solo and reacting to real moments, autofocus earns its place. Use manual focus when you want to guide the viewer's attention. Use autofocus for fast-moving action, or when there's no time to pull focus.

If you're planning your first solo shoot, my solo documentary filmmaking guide covers gear, planning and workflow from start to finish.

None of these techniques needs expensive gear, just practice, so pick one and try it on your next shoot.

Frequently Asked Questions

How do you focus when filming yourself?

Put a stand-in object, like a light stand or chair, where you'll be sitting or standing. Focus on it manually, lock the focus, then take its place without touching the focus ring. If your camera has face-detect autofocus, you can also use that to track your face once you're in frame.

What's the best autofocus camera for solo filmmakers?

Popular options on a budget include the Canon R6, Sony FX30 and Panasonic GH7. All offer strong autofocus systems designed for video.

How do you keep a moving subject in focus without a focus puller?

Set the focus distance and walk in sync with your subject, or use autofocus with subject tracking. Manual focus is possible too, with practice.

Should I use autofocus or manual focus for documentaries?

Use autofocus for fast-paced or solo shoots. Use manual focus when you want precise, controlled shots that guide the story.

What f-stop keeps everything in focus?

An aperture of f/8 to f/11 gives you deep focus on most lenses. The higher the f-stop number, the more of the scene stays sharp. The trade-off is that you'll need more light and you'll lose the shallow depth-of-field look.